SIG SAUER P365-FUSE 9mm 4.3-Inch Manual Safety Pistol

SIG SAUER P365-FUSE 9mm with Manual Safety

The SIG SAUER P365-FUSE brings a longer slide, full-capacity magazine package, and extended grip geometry to the slim P365 platform. This exact black manual-safety model, manufacturer part number 365XF9BFOMS, is chambered in 9mm and built around a 4.3-inch barrel, an optic-ready stainless-steel slide, and SIG SAUER’s laser-stippled LXG grip module. It is intended for shooters who want the handling and sight radius of a larger pistol while retaining the narrow profile associated with the P365 family.

Longer Slide and 4.3-Inch Barrel

The FUSE uses a 4.3-inch carbon-steel barrel with a black DLC finish. The longer barrel and slide provide a six-inch sight radius and a longer reciprocating assembly than standard P365 configurations. SIG SAUER designed this format to support useful ballistic performance from modern 9mm ammunition while offering a steady sight picture and additional control. The stainless-steel slide wears a Nitron finish and aggressive serrations that provide positive contact points during loading, unloading, and malfunction-clearing procedures.

Optic-Ready Sight System

This model ships without an installed electronic sight, but its slide is optic ready for the compact mounting interface specified by SIG SAUER. That gives the owner the option to retain the factory iron-sight arrangement or install a compatible compact reflex sight. The standard sights pair a high-visibility fiber-optic front with a black serrated rear. The bright front reference is easy to locate, while the serrated rear helps reduce distracting glare and keeps visual emphasis toward the target and front sight.

LXG Grip Module and Adaptable Fit

The black polymer LXG grip module uses laser-engraved texture to provide traction without adding excessive bulk. Small, medium, and large interchangeable backstraps are included, allowing the grip circumference and trigger reach to be tuned to the shooter. A removable magazine well is fitted at the base of the grip to help guide the magazine during reloads. The M1913 accessory rail accepts compatible lights and other rail-mounted equipment, giving the pistol flexibility for home-defense, training, or carry-oriented setups.

A nickel-plated flat-faced trigger provides a broad, consistent contact surface. This specific configuration also includes a manual safety. The safety is an additional mechanical control and does not replace safe handling, a suitable holster, or keeping the trigger protected until the decision to fire. Owners should become familiar with the safety’s operation during dry handling and live-fire practice in accordance with the SIG SAUER owner’s manual.

Magazine Package and Capacity

The factory package includes two 21-round steel magazines and one 17-round steel magazine. The 21-round magazines maximize the capacity available in the FUSE format, while the 17-round magazine gives the owner another compatible option for training or a more compact magazine profile. The pistol’s longer grip and removable magwell are shaped to support confident reloads and a full firing-hand purchase.

Dimensions and Carry Considerations

SIG SAUER lists the manual-safety P365-FUSE at 7.2 inches long, 1.1 inches wide, 5.1 inches high, and 23.1 ounces with a magazine. Those specifications place it between traditional compact and full-size categories: it is slimmer and lighter than many service pistols, but longer than the smallest P365 variants. Buyers selecting a holster should confirm compatibility with the 4.3-inch FUSE slide, manual-safety controls, chosen optic, and any mounted light rather than assuming that every P365 holster will fit.

Key Specifications

• Manufacturer part number: 365XF9BFOMS
• UPC: 798681739233
• Caliber: 9mm Luger
• Action: Striker fired
• Manual safety: Yes
• Barrel: 4.3-inch carbon steel with black DLC finish
• Slide: Nitron-finished stainless steel, optic ready, aggressively serrated
• Sights: Fiber-optic front and black serrated rear
• Grip: Black polymer LXG module with interchangeable backstraps
• Accessory rail: M1913
• Magwell: Removable
• Magazines included: Two 21-round and one 17-round steel magazines
• Overall length: 7.2 inches
• Overall width: 1.1 inches
• Height: 5.1 inches
• Weight: 23.1 ounces with magazine

A Slim, High-Capacity Crossover

The P365-FUSE manual-safety model is designed for the buyer who wants P365 modularity with a longer barrel, extended sight radius, full-hand grip, and high-capacity magazine package. Its optic-ready slide, practical fiber-optic sight, adaptable backstraps, accessory rail, and removable magwell make it suitable for serious range work as well as thoughtfully configured carry or defensive use. Confirm all local magazine-capacity and ownership requirements before purchase, and follow the manufacturer’s instructions for operation, inspection, cleaning, and storage.